Alkermes plc. — Director's Dealing 2013

Jul 2, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2013-07-01

Reporting Person: LANDINE MICHAEL J (SVP, Corp Dev., Alkermes, Inc.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-07-01	Ordinary Shares	M	1	$12.16	Acquired	118947	Direct
2013-07-01	Ordinary Shares	S	1	$29.6004	Disposed	118946	Direct
2013-07-01	Ordinary Shares	M	9999	$12.16	Acquired	128945	Direct
2013-07-01	Ordinary Shares	S	9999	$29.6004	Disposed	118946	Direct
2013-07-01	Ordinary Shares	M	875	$14.57	Acquired	119821	Direct
2013-07-01	Ordinary Shares	S	875	$29.6004	Disposed	118946	Direct
2013-07-01	Ordinary Shares	M	9125	$14.57	Acquired	128071	Direct
2013-07-01	Ordinary Shares	S	9125	$29.6004	Disposed	118946	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-07-01	Incentive Stock Option (Right to Buy)	$12.16	M	1	Disposed	2013-12-10	Ordinary Shares (1)	Direct
2013-07-01	Non Qualified Stock Option (Right to Buy)	$12.16	M	9999	Disposed	2013-12-10	Ordinary Shares (9999)	Direct
2013-07-01	Incentive Stock Option (Right to Buy)	$14.57	M	875	Disposed	2013-10-17	Ordinary Shares (875)	Direct
2013-07-01	Non Qualified Stock Option (Right to Buy)	$14.57	M	9125	Disposed	2013-10-17	Ordinary Shares (9125)	Direct

Footnotes

F1: This option exercise was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F2: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F3: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $29.23 to $29.868. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.

F4: These options are fully vested in accordance with their terms.